21253236146130 has 16 divisors (see below), whose sum is σ = 51007766750784. Its totient is φ = 5667529638960.

The previous prime is 21253236146123. The next prime is 21253236146143. The reversal of 21253236146130 is 3164163235212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354220602406 + ... + 354220602465.

It is an arithmetic number, because the mean of its divisors is an integer number (3187985421924).

Almost surely, 2^{21253236146130} is an apocalyptic number.

21253236146130 is an abundant number, since it is smaller than the sum of its proper divisors (29754530604654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21253236146130 is a wasteful number, since it uses less digits than its factorization.

21253236146130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708441204881.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 21253236146130 in words is "twenty-one trillion, two hundred fifty-three billion, two hundred thirty-six million, one hundred forty-six thousand, one hundred thirty".